C++ HASH_MAP

写这个小程序主要是想要测试如何使用hash_map进行数据统计，工作中的实际问题是需要将pcap文件中的所有数据包按照数据流四元组<源IP，目的IP，源Port，目的Port>进行统计

// Author: HSW

// Date: 2016/5/15

// 

#include  
#include  
#include  
#include  
using namespace std; 

int main()
{
	hash_map*> IntHashMap; 
	vector* TmpVector; 
	vector MapKey1; 
	vector MapKey2; 
	MapKey1.push_back("str1"); 
	MapKey1.push_back("str2"); 
	MapKey1.push_back("str1");
	MapKey1.push_back("str2");
	MapKey1.push_back("str1");
	MapKey1.push_back("str2");

	MapKey2.push_back("str1_1");
	MapKey2.push_back("str2_1");
	MapKey2.push_back("str1_2");
	MapKey2.push_back("str2_2");
	MapKey2.push_back("str1_3");
	MapKey2.push_back("str2_3");
	typedef pair* > Makepair; 
	vector::iterator iter1, iter2; 
	hash_map*>::iterator HashMapiter; 
	vector::iterator pvectoriter; 
	int HashKey; 
	for (iter1 = MapKey1.begin(), iter2 = MapKey2.begin(); iter1 != MapKey1.end(); ++iter1, ++iter2)
	{
		HashKey = hash_value(*iter1); 
		if ((HashMapiter = IntHashMap.find(HashKey))!= IntHashMap.end())
		{
			(*(*HashMapiter).second).push_back(&(*iter2)); 
		}
		else
		{
			TmpVector = new vector; 
			(*TmpVector).push_back(&(*iter2));
			IntHashMap.insert(Makepair(HashKey, TmpVector)); 
		}
	}
	for (HashMapiter = IntHashMap.begin(); HashMapiter != IntHashMap.end(); ++HashMapiter)
	{
		TmpVector = (*HashMapiter).second; 
		cout << "对应键值 = " << (*HashMapiter).first << endl; 
		for (pvectoriter = (*TmpVector).begin(); pvectoriter != (*TmpVector).end(); ++pvectoriter)
		{
			cout << *(*pvectoriter) << "\t\t\t"; 
		}
		cout << endl; 
	}
	system("pause"); 
	return 0; 
}

运行截图如下：